From e1073d1e7920946ac4776a619cc40668b9e1401b Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Thu, 6 Jul 2017 15:39:17 -0700 Subject: mm/hugetlb: clean up ARCH_HAS_GIGANTIC_PAGE This moves the #ifdef in C code to a Kconfig dependency. Also we move the gigantic_page_supported() function to be arch specific. This allows architectures to conditionally enable runtime allocation of gigantic huge page. Architectures like ppc64 supports different gigantic huge page size (16G and 1G) based on the translation mode selected. This provides an opportunity for ppc64 to enable runtime allocation only w.r.t 1G hugepage. No functional change in this patch. Link: http://lkml.kernel.org/r/1494995292-4443-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com Signed-off-by: Aneesh Kumar K.V Cc: Michael Ellerman (powerpc) Cc: Anshuman Khandual Cc: Benjamin Herrenschmidt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/x86/include/asm/hugetlb.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch/x86/include/asm/hugetlb.h') diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h index 3a106165e03a..535af0f2d8ac 100644 --- a/arch/x86/include/asm/hugetlb.h +++ b/arch/x86/include/asm/hugetlb.h @@ -85,4 +85,8 @@ static inline void arch_clear_hugepage_flags(struct page *page) { } +#ifdef CONFIG_ARCH_HAS_GIGANTIC_PAGE +static inline bool gigantic_page_supported(void) { return true; } +#endif + #endif /* _ASM_X86_HUGETLB_H */ -- cgit v1.2.3